body, div, p, h4, ul, li, dl, dt, dd, h1, h2, h3, h4, h5,h6{
  margin: 0;
  padding: 0;
}

body{
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.42857143;
  color: #333;
  background-color: #fff;
}
*{
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
li{
  list-style: none;
}
a{
  text-decoration: none;
}
input::-webkit-input-placeholder{
  color: #999;
}
input:-ms-input-placeholder{
  color: #999;
}
/* IE去掉箭头样式 */
select::-ms-expand { display: none; } 
select{
  -webkit-appearance:none;
  -moz-appearance:none;
  -ms-appearance:none;
  

}
.icon-select,
select{
  /*在选择框的最右侧中间显示小箭头图片*/
  background: url(./images/icon_narrow.png)  no-repeat scroll 96% center transparent;
  background-size: 10px 8px;
}
img{
  display: block;
  width: 100%;
}
.layer{
  position: relative;
  max-width: 750px;
  margin: 0 auto;
  overflow-x: hidden;
}
.btn{
  display: inline-block;
  padding: 6px 12px;
  margin-bottom: 0;
  font-size: 14px;
  font-weight: normal;
  line-height: 1.42857143;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  -ms-touch-action: manipulation;
  touch-action: manipulation;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-image: none;
  border: 1px solid transparent;
  border-radius: 4px;
}
.btn-block{
  display: block;
  width: 100%;
}
.form-control{
  display: block;
  width: 100%;
  height: 45px;
  padding: 6px 12px;
  font-size: 14px;
  line-height: 1.42857143;
  color: #555;
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
}